Tex. Nat. Res. Code § 11.073

In Sections 11.074 and 11.075 of this code, "fencing" means the erection of any structure of wood, wire, wood and wire, or any other material, whether it encloses land on all sides or only one or more sides, which is intended to prevent the passage of cattle, horses, mules, sheep, goats, or hogs.